This example demonstrates a simple interactive menu for selecting a color from a predefined palette. It uses D3 v7’s `select` and `join` methods to render an HTML `<select>` element with options for six colors, updating the displayed selection as the user changes the value. The code separates the menu logic into a reusable function and leverages a state management pattern to track the current choice. The visualization itself is minimal, showing only the dropdown on a grey background, with no further graphical output beyond the menu.